Angle-cock.



V. P. HARVEY. ANGLE UCK. Prummel FILED snm'. 1o, 1910.

Patented Dec. 19, 1911.

VELVESTUS P. HARVEY, OF ASHTABULA, OHIO.

ANGLE-COCK.

Specification of Letters Patent.

Patented Dee.. 19, 1911.

Application led -September 10, 1910. Serial No. 581,443.

To all whom 'it may concern:

Be it knov; n that I, VELvns'rUs l). l-lanvnr, a citizen of the'UnitedStates., residing' at Ashtabula. in the county ot' Ashtahula and Stateof Ohio, have invented certain new and useful Improvements inAngle-Cocks, of which the following' is a specification.

The invention relates to an improven'ient. in angle cocks as ordinarilyused in air brake systems, and is particularly directed to providing.such angle cock with a leakage groove adapted when the cock is turnedto cut-off the particular car equipment to forni a vent for the air inthe hose connections forward of the angle cock. whereby to lilced such.hose connection to atniospheric pressure for conveilient uncouplingr ofthe hose and the avoidance of breaking or stretching the same.

The inventlzn in its lneferred forni of details will be described in thefollowing Specification, reference being had particularly t0 theaccompanying drawings, in which- Figure l is a longitudinal centralsection through an angle cock constructed in accord ance with myinvention, the valve therein being shown in open position. Fig. 2 is asimilar view showing the valve in closed position and illustratingparticularly the leakage groove. Fig. 3 is a plan of the improved anglecock. Fig. 4 is a perspective of the upper portion of the valve.

ln the accompanying drawings, which aside from the specific detailshereinafter noted. are designed for conventional illustration only ofthe parts shown, 1 designates the casing of an ordinary angle cock inwhich is mounted in "the usual manner the tapering plugr valve 2. Theupper end of the valve projects above the proximate surface of thecasing and is formed with a noncircular extension 3 to receive asimilarly formed aperture 4 in an operating handle 5. That portion ot'the valve within the bore 6 of the casing' is formed with a port 7which, when the valve is in open position, as shown 'in Fig. l, providesuninterrupted communication through the angle cock, as is usual.

The .salient4 feature of the present invention resides in forming thevalve with a leakage groove 8, preferably by channeling or grooving therelatively upper portion of the valve in that surface at right angles tothe port 7 and towa rd the hose-connected end of the angle cock when thelatter is closed.

'lhe leakage groove is ot' comparatively mi* nuto proportions and is ofsuch length that its lower end projects into the here (3 of thecas-ing", while its upper end extends through the valve body to thcnon-circular handlereceiving portion 3. The shoulder formed by theplncture ol the valve body and the non-circular llandle-recoivine`portion is slightly cut away as at t) at the upper end ot' the leakagegroove to form an escape passage for the air liclow the handle, and oneof the corners of the noncircular portion 3 cut otlA throughout theheight of the said portion. as at l0. thereby providing. when the handleis in place. an additional escape port 1] between the handle and portion 3. The port 1l is thus alined with the leakage port s to morereadily permit the. escape of the air.

With the improved angle cock in use it' will he noted that when thevalve is open, as in use of the air brake system, the leakage groove isclosed hy Vthe usual lining of the angle cock, and is without function,while when the valve is closed the leakage 2c'roove is turned toward thehose connection, venting said hose to atmospheric pressure andpermitting the convenient unconpling from the adjacent car. similarlyprovided.

The invention is designed for venting the hose pipe connections betweencars or the like so that in uncoupling no resistance is encountered fromthe. contained vacuum or pressure, and no liability of breaking orstretching the hose results.

The invention 'is to be .carefully distin guished from that type inwhich the angle -coek is provided with means whereby the train pipethroughout is vented, as in such instance the brakes are automaticallyset and the esca pe ports ot the angle cock have to he of such size asto vent the train pipe rapidly enough to setthe brakes. The presentleakage groove is simply large enouvh to vent. the hose connections`when the angle cock has been turned in the usual manner incident touncoupling.,r said connections. The present improvementis without effectupon pressure of the train line, and is not. designed to effeet in anyWay any part. of the equipment other than the hose connections.

It is to be noted that my invention is adapted to be readily applied tothe ordinary type of air brake system angle cocks in common use with butvery slivht modification of the latter and thus full benefit of theprinciple of the invention can be secured with practically no additionalexpense over present standard equipment.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

An angle cock adapted for connection with the train line at one end andwith the connecting hose at the opposite end, said cock includin a valveformed with an o ening to estabsh connection between t ose portions ofthe cock on opposite sides of the valve, said valve being formed with avertically-extending leakage groove to. establish communication betweenthe atmosphere and the hose end of the angle cock when the valve is in aposition to cut o communication between the respective ends of the anglecock, said valve serving to at all times close the train pipe end of tthe atmosp ere except through said valve opening.

In testimon whereof, I aix my signature in presence o two witnesses.

VELVESTUS P. HARVEY. Witnesses: y A. W. HOPKINS, B. C. BLAKESLEE.

e angle cock against

